Sheet-metal frame.



F. B.WORDEN & E. CARLSON.

SHEET METAL FRAME.

APPLICATION FILED NOV. 6, 19H.

Patented July 17, 1917 yIIIIIll/IIIII' IIIIIIIIIIIIII' 1 011,111,111, "urn/1,

W a a furs/v ran-r3 g JITTaR/VEY UNITED STATES PATENT OFFICE,

TRAN K B. WOBDEN. OF JAMESTOWN. AND EDVARD CARLSON. O F BUFFALQ. NEW YORKi ASSIGNOBS, BY MESNE ASSIGNMENTS, TO SAID FRANK- B. WORD IN' SHEET-METAL FRAME.

I Specification of Letters Patent.

.latentetl July 1 7, 1917.

Original application filed February 9, 1914 Serial No. 817,559. Divided and this-application filed November 6, 1914. Serial No. 870,679.

To all whom it may (wire/n.

Be it known that we, FRANK B. \Vonnns and liDYMtl) (.HtLSUN, citizens of the United States. and residents of Jamestown, in the.

, rounty of Chautauqua. and Buffalo, county of Erie, respectively, in the State of New York, have invented new and useful Improvements in SheetMetal Frames, of'whieh the following, taken in connection with the accompanying drawings, is a full, clear, and exactdesvription.

This invention relates to certain impr0vemerits in sheet metal frames, and more parquickly removetlor replaeed in operative po-- sition without displacin destroying or otherwise mutilating any of the parts of tho frame. to allow. it used in ('onnt't'tion with screen trann-s. the r wiring of the frame.

A further ohjei-t is to provide novel means operating upon a novel prinriphfor removahly retaining the panel or sort-en in operativo position.

()tlu'r UlljttiiH and uses will appear from the following drsrription taken in ('onnvrtion with the :n-i-ompanying drawings, in \\'hirl\------ Figure l is a view of one rorner ot' a metal frame showing a portion of one of the end and one of the, side rails. all ronslrurted in :uwordanee withdthis inventiol'i.

Figs. :3 and 3, show slightly varied Vays in which the i'raine may he formed from a sin gle strip of sheet metal.

Fig. 4'- illustrates a slightly varied form oi retaining strip,

Fig. 5 shows a retaining spring as applied to the frame of Fig. l.

The frame is formed of separate hollow side and nd rails -l---- and 2- respectivelv having their meeting ends mitered connecting portion --1] extending across both channels -t and -5.

The fahrie or panel is placed in the inner reress 5 and the arm 7- of the retaining strip is pressed in to hold the panel or screen and the circular portion 10 of the arm --8 is snapped into the cirrular and laterally extendin" groove of the channel 8- and lOCTiS theretaining strip in operative positionf It will he apparent that the pull of the t'ahric upon the arm 7 tends to draw the rirrnlar portion -l more tightly into engagement with the wall of the recess f) so that. the lot-king means becomes more positive as the tension upon the. fabric heronwsgreater. and any increased strain upon the panel i merely draws the retaining strip more lirmly into locking position.

.\s'sho\vn, the end and side rails -land respectively are. each formed of a single strip of sheet metal, the parallel channels -t and -:'ibeing formed near one edge as shown in Fig. l, the end portions living hrought into (-ontm't-aml the 4 outer one heing hent around the inner one. to form the llange -llextending into inner groovei lly forming the inner groove f with two of its walls in contact with the outer wall ol the Frame sides and ends, the constl'm'tion is greatly strengthened at. the point of greatest strain.

in Figs. 2 and 3, the ohani'iels land '5- are -l'ormed in the intermediate portions of the sheet metal strips of which the frame sides and ends are made and the lengthwise edge. of the. strips may he hent together at the outer edge/of the frame and the edge, -l".2--- may be bent around the edge --l3--, as shown in Fig.3, or a separate U-shapehar 14 may he utilized to unite tlio'edges as shown in Fig. 2, the projm-ting portions formed by the edges '19\.:--.-

. and 13 with or without the addition of the bar -14 constituting a guiding means for the screen in a'suitable window or door frame. a e

In Fig. 4; a slightly different 'form of locking strip is illustrated in'that the inner edge of the arm 7 is o'fi'set or bent toward the arm .S to form a laterally extendin flange -15 which in certain cases is more eilicient for holding the panel in the channel 5-.

Fig. 5 illustrates a spring l6 asapplied to the side rail 1 of the frame shown in Fig. -1-- and is mounted in the groove 1(3 one end 1T being otfset and inserted through a slot in the metal frame, the other endbeing movableto allow the proper movement of the spring under pressure.

It will be apparent that many changes may be made in the details of construction and arrangement of the features hereinbetore described without departing from the spirit of this invention as set forth iirthe appended claim, the essential feature of which is the use of two channels in combination with a two-armed retaining strip,'

,jacent wallof the rib.

What we claim is: A frame having its side rails conslstlng of sheet metal bent to form a closed tube; each dering the outer channel provided with a portion laterally offset into substantial contact with the wall of saidrib bordering the inner of said channels, and a retaining strip having an arm in each channel, the arm in the outer channel provided with a laterally otlset portion adapted to interlock with the laterally offset portion of the ad In witness whereof we have-hereunto set our hands this 29th day of October, 19H.

FRANK B. \VORDEN. EDVARD GARLSON.

lVitnesses BERTIIA S. AnMruGn, 1\'L\RTIN L. BUM-101m, THOMAS L. QUIGLEY, 4 WV. 7. ASHLEY. 

